A printing apparatus comprises a first roller for conveying sheets, a first motor for driving the first roller, a second roller for conveying sheets, and a second motor for driving the second roller, and a conveyance controller that controls conveyance to be able to execute a first conveyance operation for conveying sheets such that the trailing edge of a preceding sheet and the leading edge of a succeeding sheet overlap, and a second conveyance operation for conveying sheets by arranging a distance between the trailing edge of the preceding sheet and the leading edge of the succeeding sheet, wherein the conveyance controller, based on information indicating that the second motor is in a temperature rising state, controls whether to execute the first conveyance operation or to execute the second conveyance operation.

A liquid ejection apparatus includes a liquid ejection head, a sensor, a carriage, and a controller. The controller is configured to perform: setting a first sheet at a first printing position; printing an image on the first sheet while conveying the first sheet from the first printing position; determining whether an interval is more than a predetermined period; in a case where the interval is determined to be more than the predetermined period: causing the carriage to move in a first direction to a first detection position at which a second sheet is detected; and in response to detecting the second sheet, causing the carriage to move in the first direction to a first carriage position.

A media thickness detection system for inkjet printing applications monitors the thickness of media entering the printer to ensure correct printing performance by adjusting the position of the printheads on-the-fly to assure printing quality. Media that do have an acceptable printing thickness are passed through the printer without stopping operation of the printer transport and without being printed upon and are routed directly to a reject facility. Embodiments also prevent damage to the printer by immediately stopping operation of the printer when substrate thickness deviates significantly from an expected value due to variations in thickness that result from manufacturing tolerances or damage to the substrate.

A printing apparatus includes a conveyance unit arranged on an upstream side of a printing unit in a conveyance direction of a print medium and configured to convey the print medium to the printing unit, and a control unit configured to, after a start of printing for the print medium by the printing unit, regulate the printing by the printing unit during a time when a leading edge of the print medium conveyed by the conveyance unit is passing through a set section preset on a conveyance path of the print medium.

A holder assembly includes a base, a drive assembly coupled to the base, a motive source connected to the drive assembly, a vertical force applicator connected to the drive assembly along a connection edge thereof, and a gripping member coupled to the base, the gripping member having a contact surface coupled to a vacuum source, wherein the drive assembly has a first position with the flattening member engaged with the contact surface and a second position with the flattening member positioned away from the contact surface.

A method of handling a sheet defect error in a duplex print process, wherein media sheets are successively supplied along a feed path and are moved past a print engine where a first image is printed on a first side of each sheet in a first print pass, the sheets are then returned, via a duplex loop that contains a sheet flipping mechanism, to the feed path upstream of the print engine so that a second image can be printed on a second side of each sheet in a second print pass, the finished sheets being then discharged in a predetermined page sequence, and wherein, when a sheet defect is found a first print pass of a sheet, the defective sheet is diverted into an eject path downstream of the print engine, and a print pass for an immediate successor of the defective sheet is skipped. The subsequent semi-finished sheets are recirculated in the duplex loop while the supply of fresh sheets into the feed path is interrupted, and duplex printing is resumed during or after recirculating the subsequent semi-finished sheets.

A page of a print job is to be compiled by a printing device upon printing. It is determined that at time of compiling, the page will include print fluid, greater than a threshold, at locations corresponding to the compiling paddles. Drying of the page is responsively increased upon the device printing the page.

Method and devices for dynamically preventing printing errors caused by a media deformation are disclosed. In one example, a pen to print media space (PPS) distance is measured. A media deformation is identified in response to measuring the PPS distance. A corrective function is identified in response to identifying the media deformation. The corrective function identified is then performed. The proposed method provides for consistent quality across a print.

A printer deposits material onto a substrate as part of a manufacturing process for an electronic product; at least one transported component experiences error, which affects the deposition. This error is mitigated using transducers that equalize position of the component, e.g., to provide an “ideal” conveyance path, thereby permitting precise droplet placement notwithstanding the error. In one embodiment, an optical guide (e.g., using a laser) is used to define a desired path; sensors mounted to the component dynamically detect deviation from this path, with this deviation then being used to drive the transducers to immediately counteract the deviation. This error correction scheme can be applied to correct for more than type of transport error, for example, to correct for error in a substrate transport path, a printhead transport path and/or split-axis transport non-orthogonality.

An example device includes a page sensor to detect a page of a print medium picked from a source tray of a printer. The device further includes a processor connected to the page sensor. The processor is to determine a delay in detection by the page sensor of the page conveyed by a page feed mechanism. In response to determination of the delay, the processor is to control the page feed mechanism to continue to convey the page through the printer and the processor is further to trigger the printer to reprint data intended for the page to a subsequently picked page of print medium.